Casey Paleos, MD is a psychiatrist and researcher with over a decade of experience in the use of psychedelic medicines for the treatment of mental illness, dating back to his work, while still in residency training, as a study therapist in the landmark Psilocybin Cancer Anxiety Study at NYU, where Dr. Guss was one of his mentors. Since then, Dr. Paleos was Co-Principal Investigator in the NYU-Bellevue Ketamine for Depression Study and has been treating patients in his private practice with both ketamine infusion therapy and ketamine-assisted psychotherapy since 2016. Presently, he is a study therapist and Principal Investigator, alongside Dr. Gorman, in the MAPS-sponsored MDMA-Assisted Psychotherapy for PTSD Phase 3 Clinical Trial, serves as Scientific Director at Mindbloom, Inc., and is a co-founder of Nautilus Sanctuary, a non-profit psychedelic research and clinical institution based in New York City.